Gary,
The Frame Buffer reads 1080i29.97 above it and inside the rectangle it has YUV-10b.
The frame buffer appears to correlate to the output though, meaning I can change what appears above the frame buffer by going to the format tab, change it from the drop down list under Video Format (Sorry if you already know this,) with certain selections causing the HDMI input signal to disappear (remedied by unplugging then replugging the hdmi cable back in.)